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- 1. Multiple Choice
which is the hardest known substance on Earth:-
diamond
gold
all of the above
none of the above
- 2. Multiple Choice
the substances that dissolve in water are called
soluble substances
immiscible substances
sugar
water
- 3. Multiple Choice
which is form of matter:-
washing powder
solid
sugar
plasma
- 4. Multiple Choice
choose the symbol for:- oxygen
atom
water
- 5. Multiple Choice
choose the symbol for:- sodium
Na
C1
O
sodium
- 6. Multiple Choice
choose the following which are soft:-
satin fabric
bark of tree
cushion
none of the above
- 7. Multiple Choice
choose the following that are hard:-
bark of tree
potter's clay
lampshade
stone
- 8. Multiple Choice
which is the fourth state of matter:-
plasma
solid
liquid
none of the above
- 9. Multiple Choice
materials that allow the transfer of heat and electricity are called:-
conductors
insulators
water
conduction
- 10. Multiple Choice
materials that allow light to pass through it completely:-
opaque
transparent
translucent
all of the above
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